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Class XII Chemistry IQs on d and f Block Elements

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Question 1

What is the name of the element with atomic number 105 ?

Question 2

The actinoides exhibit more number of oxidation states in general than the lanthanoids. This is because

Question 3

The isoelectronic pair of ions is

Question 4

The oxidising ability of the given anions follows the order

Question 5

Which of the following statements is INCORRECT for pair of elements Zr - Hf?

Question 6

Which of the following metals will precipitate copper from copper sulfate solution?

Question 7

Which of the given oxide of chromium is the most acidic in nature?

Question 8

Acidified solution of chromic acid on treatment with H₂O₂ yields

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Aug 20JEE & BITSAT